Near Termini as part of the grounds of the fine Palazzo Cinquecento hotel and the Servian wall. Staff there were terrific when we arrived laaaaaaate, like the following-day late at 3am. We explained how the rocket surgeons at Air Canada had cancelled our original flight and well...young staffer Alessandro was so understanding and still honored our paid-by-points reservation. He also assisted with the complicated process of re-ordering our morning Frecciarosa train ticket. Now THAT'S service.